Bugfixes.

* config/mailutils-config.c (main): Do not print flag descriptions
on --info, this breaks existing scripts.
New option --verbose makes --info print verbose descriptions.
* include/mailutils/version.h (mu_fprint_options)
(mu_fprint_conf_option): Take additional argument.
* mailbox/argcv.c (quote_transtab): Handle \".
* mailbox/cfg_driver.c (mu_cfg_string_value_cb): Bugfix
* mailbox/cfg_lexer.l: Allow * and = in non-quoted words.
Improve 'stray character' diagnostics'.
(unescape_to_line): Handle \\ and \".
* mailbox/version.c (mu_fprint_options)
(mu_fprint_conf_option): New argument `verbose' instructs whether
to print textual descriptions.
(mu_fprint_conf_option): Print single space after the flag to
facilitate writing parser scripts.
* testsuite/lib/mailutils.exp: Reflect this change.

@@ -40,6 +40,8 @@ static struct argp_option options[] = {
    "for. In this case the program prints those options from this list that "
    "have been defined. It exits with zero status if all of the "
    "specified options are defined. Otherwise, the exit status is 1."), 0},
+  {"verbose", 'v', NULL, 0,
+   N_("Increase output verbosity"), 0},
   {0, 0, 0, 0}
 };
 
@@ -51,6 +53,7 @@ enum config_mode {
 };
 
 enum config_mode mode;
+int verbose;
 
 static error_t
 parse_opt (int key, char *arg, struct argp_state *state)
@@ -69,6 +72,10 @@ parse_opt (int key, char *arg, struct argp_state *state)
       mode = MODE_INFO;
       break;
 
+    case 'v':
+      verbose++;
+      break;
+      
     default: 
       return ARGP_ERR_UNKNOWN;
     }
@@ -269,7 +276,7 @@ main (int argc, char **argv)
 
     case MODE_INFO:
       if (argc == 0)
-	mu_print_options ();
+	mu_fprint_options (stdout, verbose);
       else
 	{
 	  int i, found = 0;
@@ -280,7 +287,7 @@ main (int argc, char **argv)
 	      if (opt)
 		{
 		  found++;
-		  mu_fprint_conf_option (stdout, opt);
+		  mu_fprint_conf_option (stdout, opt, verbose);
 		}
 	    }
 	  return found == argc ? 0 : 1;

@@ -33,8 +33,9 @@ struct mu_conf_option
   
 extern char *mu_license_text;
 extern void mu_print_options (void);
-extern void mu_fprint_options (FILE *fp);
-extern void mu_fprint_conf_option (FILE *fp, const struct mu_conf_option *opt);
+extern void mu_fprint_options (FILE *fp, int verbose);
+extern void mu_fprint_conf_option (FILE *fp, const struct mu_conf_option *opt,
+				   int verbose);
 extern const struct mu_conf_option *mu_check_option (char *name);
 
 #ifdef __cplusplus

@@ -40,6 +40,8 @@ dirname.c
 dirname.h
 dup-safer.c
 dup2.c
+errno.h
+errno.in.h
 error.c
 error.h
 exitfail.c
@@ -138,6 +140,7 @@ stdbool.in.h
 stdint.h
 stdint.in.h
 stdio-impl.h
+stdio-write.c
 stdio.h
 stdio.in.h
 stdlib.h

@@ -19,6 +19,7 @@ dup2.m4
 eealloc.m4
 environ.m4
 eoverflow.m4
+errno_h.m4
 error.m4
 exitfail.m4
 extensions.m4
@@ -103,6 +104,7 @@ strnlen.m4
 strtok_r.m4
 sys_stat_h.m4
 sysexits.m4
+threadlib.m4
 unistd-safer.m4
 unistd_h.m4
 vasnprintf.m4

@@ -159,7 +159,7 @@ argcv_scan (struct argcv_info *ap)
   return ap->save;
 }
 
-static char quote_transtab[] = "\\\\a\ab\bf\fn\nr\rt\t";
+static char quote_transtab[] = "\\\\\"\"a\ab\bf\fn\nr\rt\t";
 
 int
 argcv_unquote_char (int c)

@@ -693,6 +693,8 @@ mu_cfg_string_value_cb (mu_debug_t debug, mu_config_value_t *val,
 			int (*fun) (mu_debug_t, const char *, void *),
 			void *data)
 {
+  int rc = 0;
+  
   switch (val->type)
     {
     case MU_CFG_STRING:
@@ -723,10 +725,14 @@ mu_cfg_string_value_cb (mu_debug_t debug, mu_config_value_t *val,
 	    mu_config_value_t *pval;
 	    mu_iterator_current (itr, (void*) &pval);
 	    if (mu_cfg_assert_value_type (pval, MU_CFG_STRING, debug))
+	      {
+		rc = 1;
+		break;
+	      }
 	    fun (debug, pval->v.string, data);
 	  }
 	mu_iterator_destroy (&itr);
       }
     }
-  return 0;
+  return rc;
 }

@@ -101,7 +101,7 @@ P [1-9][0-9]*
 			yylval.string = _mu_line_finish ();
 			return MU_TOK_IDENT; }
          /* Strings */
-[a-zA-Z0-9_\./:-]+    { _mu_line_begin ();
+[a-zA-Z0-9_\./:\*=-]+ { _mu_line_begin ();
                         _mu_line_add (yytext, yyleng);
                         yylval.string = _mu_line_finish ();
                         return MU_TOK_STRING; }
@@ -149,7 +149,14 @@ P [1-9][0-9]*
          /* Other tokens */
 \n       { mu_cfg_locus.line++; } 
 [,;{}()] return yytext[0];
-.        mu_cfg_perror (&mu_cfg_locus, _("stray character \\%03o"), yytext[0]);
+.        { if (isascii (yytext[0]) && isprint (yytext[0]))
+              mu_cfg_perror (&mu_cfg_locus,
+			     _("stray character %c"), yytext[0]);
+           else 
+              mu_cfg_perror (&mu_cfg_locus,
+			     _("stray character \\%03o"),
+			     (unsigned char) yytext[0]);
+         }
 %%
 
 int
@@ -164,7 +171,7 @@ unescape_to_line (int c)
   if (c != '\n')
     {
       char t = mu_argcv_unquote_char (c);
-      if (t == c)
+      if (t == c && t != '\\' && t != '\"')
 	mu_cfg_perror (&mu_cfg_locus, _("unknown escape sequence '\\%c'"), c);
       mu_opool_append_char (pool, t);
     }

@@ -127,27 +127,27 @@ static struct mu_conf_option mu_conf_option[] = {
 };
 
 void
-mu_fprint_conf_option (FILE *fp, const struct mu_conf_option *opt)
+mu_fprint_conf_option (FILE *fp, const struct mu_conf_option *opt, int verbose)
 {
   fprintf (fp, "%s", opt->name);
-  if (opt->descr)
-    fprintf (fp, "\t- %s", _(opt->descr));
+  if (verbose && opt->descr)
+    fprintf (fp, " \t- %s", _(opt->descr));
   fputc('\n', fp);
 }
 
 void
-mu_fprint_options (FILE *fp)
+mu_fprint_options (FILE *fp, int verbose)
 {
   int i;
   
   for (i = 0; mu_conf_option[i].name; i++)
-    mu_fprint_conf_option (fp, mu_conf_option + i);
+    mu_fprint_conf_option (fp, mu_conf_option + i, verbose);
 }
 
 void
 mu_print_options ()
 {
-  mu_fprint_options (stdout);
+  mu_fprint_options (stdout, 1);
 }
 
 const struct mu_conf_option *

@@ -372,7 +372,7 @@ proc mu_version {} {
     set output [remote_exec host "$MU_TOOL --show-config-options"]
     set flg [split [lindex $output 1] "\n"]
     for {set i 0} {$i < [llength $flg]} {incr i} {
-	regsub "(\t.*)?\r" [lindex $flg $i] "" string
+	regsub "( .*)?\r" [lindex $flg $i] "" string
 	if [regexp "(.*)=(.*)" $string var name value] {
 	    set MU_CAPABILITY($name) $value
 	} elseif {$string != ""} {